Slit lamp



FIG. 1 is a side perspective of a slit lamp showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is an elevation as seen from the left of FIG. 2;

FIG. 4 is an elevation as seen from the right of FIG. 2;

FIG. 5 is a rear elevation thereof; and

FIG. 6 is a top plan view thereof. 

The ornamental design for a slit lamp, substantially as shown in the drawing. 